Bushings Upgrade For WRX
Whiteline subframe locks part number KSB750 positively keep the subframe from moving under cornering loads.  In testing, Whiteline discovered that the subframe can move laterally up to an inch under cornering loads with R-compound tires!  The subframe lock goes into existing threaded holes in the chassis and prevents the subframe from moving at all.
Ian had previously installed Whiteline adjustable lateral links part number KTA108 so he could adjust his camber.  Here is a pic of what they look like new from our Project second gen STI.  Since these have been in his car for more than 10 years, we are going to inspect the bushings and replace them if needed.
Our first step is to disassemble the rear suspension.  Note that the silver Whiteline links have turned black with grime!
Howard starts by removing the trailing arm.
Next, the rear knuckle is removed.
Next Howard removes the differential mount.


  1. I have a lot of the same parts on my 2005 WRX and absolutely love them. One question, if you needed to replace the rack is there a reason you guys didn’t upgrade to the 2015+ rack? There’s a bit of fabrication needed to make it work on a GD but I’m really glad I did it.

    Keep the GD WRX updates coming, I’m really enjoying them.

  2. Hello MotoIQ. I’ve just wrapped up doing front lower control arm front, front ALK, rear lateral links, and lateral arm bushings from whiteline in my 1999 Subaru RS. I have already had the Roll Center Adjuster kit a few years now.

    I haven’t driven the car yet, but what is your take on these parts “binding”? There’s a lot of info about urethane binding on the net, but I figured Whiteline has taken this into account…or have they? Thanks in advance!

    1. Hi Mike,

      How often do these bushings need to be re-greased? Would it be helpful to wrap the bushing sleeves with teflon tape (doesn’t look like it was done in this instance)?

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